Improved power-press



atwt ffiw. s'

www

R. H. FISHER, OF vBEAVER FALLS, PENNSYLVANIA, ASSIGNOR TO BEAVER FALLS CU'ILERY COMPANY, OF SAME PLACE.'

Letters, Patent No. 86,292, dated .Tarma/ry 26, i869.

IMPROVED POWER-PRESS.

The Schedule referred to in these Letters atent and making peut of the same.

' ments inPower-Press forPunching Metal; and do here by declare that the following is .a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon. Y

rlhe nature of my invention consists in the construction and general arrangement of a power-press for punching metal, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains, to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawings, which form a' part of this specification, and in which- Figure 1 is a side elevation, part in section;

Figure 2 is a side section, showing the clutch and touch-off 4 Figure 3 is' a transverse section of the same; and

Figure 4 is a front view, showing the pitman and punch.

A represents the frame of the press, which frame may be made in any suitable form and dimensions, and of any material desired.

In suitable bearings in the rear part orn the frame A, is placed a short shaftB,to the outer end of which the driving-wheel C is secured; this driving-Wheel being connected by a belt, or otherwise, with the engine.

On the shaft B is placed a pinion, D, which gears into a cog-wheel, E, placed loose 011 a shaft, F, in the upper part of the frame A, said shaft extending to the front of the press.

The hub of the cog-wheel E is on its inner side provided with a ring or band, a, inside of which band is placed a lug, b, which strikes the clutch c on the shaft F, thus turning the said shaft when the cog-wheel E is in motion.

yFhe clutch-pin c is fitted in a mortise on the shaft F, and a spring, e, being placed inside of this mortise, presses the clutch outward, so as to be caught bythe lug l). Y The band a, on the hub of the wheel E, prevents the clutch-pin from being thrown out of place.

Under the shaftF, between the band a andthe frame, is placed a touch-off, d, on the upper end of the treadlerod f, which touch-off is curved, as shown in fig. 3, so as to it on the side of the shaft F, and acts as an inclined plane to drive home the clutch-pin c.

The rodf is attached to a horizontal bar, g, and at each end ofthe bar g, a rod, h, passes downward through the frame A; the rods h h being at their lower ends connected by a bar, i, thus forming a frame, which is suspended from the frame A by the spring fm., which presses the touch-off d against the shaft F; the whole being operated by a treadle.

It will thus be seen that the touch-off d presses the clutch-pin c into the shaft F, so that when the wheel E revolves, the-lug b meets no resistance, and consequently the shaft F remains stationary, but as soon-as the touch-oii has been removed from the shaft bymeans of the treadle, the spring e presses the clutch-pin out,

and the lug b striking the same, the shalt F is revolved with the cog-Wheel.

On one side, on the front end of the shaft F, is placed a pin, H, around which the upper end of thepitman G is placed.

The lower end of the pitman is on its rear side provided with a boss, or circular projection, I, which ts into a steel ring or box, to lift the slide J, to prevent wearing.

The slide J runs in grooves on the front side of the frame-A, as shown in fig. 4, and to the lower end of said slide, the punch K is attached, or the punch may form part of the slide.

The pitman G is made in two parts, a' and b', having teeth similar to a ratchet, for adjusting the punch to suit the die.

The two parts, c and b', are held together by two screws c c, which pass through elongated slots on the part b', and into the part a.

A spiral spring, e', is placed in a recess on the part a', between the screws c c', and pressing against the part b', serve to spread the two parts or jaws when the screws are loosened.

' The operation of the machine will be readily seen. i

When the die has been placed in proper position, and the punch regulated to snit the same, by means of the two jaws of the pitman Gr, the engine is started, and the cog-wheel E thereby set in motion, but the touchcfr" zZ having pressed the clutch-pin c into its mortise inthe shaft F, this shaft is not revolved.

,When the metal which is to be punched is placed in L proper position.` then by means4 of the treadle, the touchoff d is released, and the clutch-pin c pressed out of its mortise by the spring e, and as soon as the lug?) strikes the clutch-pin, the shaft is turned, which then movesthe punch downward.

It will be seen that for each revolution of the shaft, the punch is moved down and up again.

The touch-off is then allowed to press the clutch-pin home again, when the punch remains stationary until the operator is ready again to let it descend.

Having thus fully described my invention,

What I claim as new, and desire to' secure by Letters Patent, is

l. The arrangement of the pitrnan G, formed of two inner-corrugated or ratchet plates ab,with the screws E, provided with a. circumferential ange, a, on its c c', and spiral spring e, all constructed and operating inner side, Within which is zt lng, b, substantially as substantially as set forth. 'p set forth.

2. The combination of the divided pitrnan G, and In testimony that I claim the foregoing, I have hereits circular projection I With the slide J, provided with unto set my hand, this 19th day of November, 1868. a circular recess for admitting the boss I to operate R. H. FISHER.

the die K, substantially as set forth. Witnesses:

3. The arrangement lof the clutch-pino and spring E. A. BARNES, e, Withinnthe mortise, onfthe cross-shaft F, the Wheel 'Y VMILO A. TOWNSEND. 

